Holocene Sediment Drift Deposit on East Antarctic Continental Shelf

A 30-meter-thick sediment drift deposit was discovered in an 850-meter-deep glacial trough off George Vth Land, East Antarctica. Radiocarbon dating indicates a period of rapid deposition occurred between approximately 3,000 and 5,000 years before present. The data was contributed by the Australian Ocean Data Network.

Use Cases

• Analyze sediment thickness and location data to model past Antarctic bottom water flow intensity.
• Use radiocarbon dating results to correlate periods of rapid deposition with global climate events in the mid-Holocene.
• Map the geospatial coordinates of the glacial trough and drift deposit for regional oceanographic studies.
• Compare deposition rates inferred from the 30-meter drift thickness with other Antarctic sediment records.

Strengths

• Sediment deposit thickness is quantified at over 30 meters.
• Specific temporal coverage is provided for rapid deposition: between 3,000 and 5,000 years BP.
• Location is precisely described: an 850-meter-deep glacial trough off George Vth Land, East Antarctica.

Limitations

• No column-level data or sample records are available.
• The dataset consists only of a descriptive HTML page with no structured data files.
• The specific data collection methodology beyond radiocarbon dating is not detailed.

Provenance

Source

Australian Ocean Data Network

Collection Method

Discovery and analysis of a sediment drift deposit, including radiocarbon dating.

Time Range

Mid-Holocene, approximately 3,000 to 5,000 years before present.

Freshness

null

Geography

Continental shelf of East Antarctica, specifically a glacial trough off George Vth Land.